Applied Physics B.Tech Question Paper : mvn.edu.in

Name of the College : MVN University
Department : Physics
Subject Code/Name : AHL-101-Applied Physics -1
Year : Dec.2012 – Jan.2013,Jan 2014
Degree : B.Tech
Sem : I
Website : mvn.edu.in
Document Type : Model Question Paper

Download Model Question Paper 1 : https://www.pdfquestion.in/uploads/mvn.edu.in/3089-APPLIED-PHYSICS-1(1).pdf
Download Model Question Paper 2 : https://www.pdfquestion.in/uploads/mvn.edu.in/3089-Physics-I.pdf

MVN Applied Physics Previous Question Paper

Subject Code: AHL-101
Time Allowed: 03 hours.
Maximum Marks: 100
Note: Attempt any five questions and all questions carry equal marks.

Related : MVN University MVN ECL100 Basics of Electronics MBA Previous Year Question Paper : www.pdfquestion.in/3114.html

January 2014

Section – A :
1. (a) What are Newton rings? Explain the formation of Newton rings in reflected light. Derive an expression for diameter of nth dark ring in the reflected light. (16)
(b) A thin film of a plastic of refractive index 1.5 for a wavelength of 5890Å is inserted in one arm of Michelson interferometer. Find the thickness of the film if a shift of 10 fringes is observed. (4)
2. (a) What do you mean by resolving power and dispersive power of a grating? Find expression for them. (16)
(b) What is the highest order or how many orders will be seen with monochromatic light of wavelength 5000Å by means of a diffraction grating with 5000 lines/cm? (4)
3. Define specific rotation. Describe the construction and working of Half Shade Polarimeter. How would you use it to determine the specific rotation of sugar solution? (20)

Section – B :
4. (a) Describe the construction and working of a He-Ne laser with necessary diagrams. (10)
(b) Derive expression for acceptance angle and numerical aperture of an optical fiber (10)
5. (a) Derive Lorentz transformation equations of relativity and show that in non-relativistic limits these equations reduces to Galilean Transformation equations. (16)
(b) At what velocity the mass of a particle becomes five times of its rest mass. (4)
6. (a) Explain the recording and reconstruction process of a hologram. (10)
(b) Explain the reasons for the property changes that take place in a material when its size is reduced to nano-scale. (10)

January 2013

Applied Physics-1
Subject Code: AHL-101
Time Allowed: 03 hours.
Maximum Marks: 100
Note :
** Before answering the question paper the candidate should ensure that they have been supplied the correct question paper.
** Complaints in this regard, if any, shall not be entertained after the examination.
** Question No. 1 is Compulsory and attempt two questions from each section. All questions carry equal marks.

1(a) What are conditions to obtain interference of Light (4)
(b) What is the condition of absent spectra in a diffraction pattern of a grating (4)
(c) What do you mean by a Quarter wave plate and a Half wave plate (4)
(d) What do you mean by population inversion? (4)
(e) What do you mean by length contraction? Write expression for this. (4)

Section – A :
2. What are coherent sources? Explain the formation of coherent sources using Fresnel’s biprism. How will you measure the wavelength of monochromatic light using it? (20)
3(a) Explain Rayleigh criterion of resolution. What do you mean by resolving power? Find expression for it. (10)
(b) A diffraction grating having 4000 lines/cm is illuminated normally by light of wavelength 5000Å. Calculate its dispersive power in 3rd order spectrum. (10)

4. Explain principle, construction and working of Nicol prism. Give its limitations. How it can be used as a polarizer and as a analyser? (20)

Section – B :
5. Describe the construction and working of a He-Ne laser with necessary diagrams. What is the utility of lasers in various fields of modern science? (20)
6. Describe the Michelson’s-Morley experiment and explain the physical significance of negative results. (20)
7(a) What are nanomaterials? Explain the sol-gel method for the synthesis of nanomaterials. (10)
(b) Explain acceptance angle and acceptance cone of a fibre. What do you mean by numerical aperture of a fibre? Derive expressions for them. (10)